Robert-hitchcock



n. mtcncocx.

Car Ventilator.

No. 96,114. Patented Oct. 25, 1869.

@titled Sintra geen one.

" ROBERTI-IITCHCCCK, 0E SPRINGFIELD, MASSACHUSETTS.

Letters Patent No. 96,114, [lated October 26, 1869.

RAILROAID-CAR VENTILATOR.

wwf- The Schedule referred to in these Letters Patent and making part of the same.

To all whom 'it may concern Be it known that I, ROBERT HITCHCOCK, of Springfield, Hampden county, Commonwealth of Massachusetts, have invented a new and'useful Improved Car- VAVentilator; and l I do hereby declare that the following This invention consists in arranging a ventilator for cars,.which will send through the latter a constant supply .of fresh air, but does not allow the cinders and trash to pass in with it.

To accomplish this, I form my ventilator as I will now describe.

A is a sheet-metal case, which has openingslat both ends, forming a tunnel for the air to rush through as4 the train moves along, this case being placed upon the top of the car, longitudinally parallel with it.

The sides of this case A are double, leaving a chamber all around the central tunnel B, except at the ends, which are bevelled from the edge of the outer shell to the inner, at the top and sides, so as to form a funnel at cach end, for the purpose of more com-v pletely catching the breeze.

In `the top of the tunnel B is a door, G, which' is cut through into thel surrounding chamber.

The .supply-pipe C, communicating with the` car, enters the bottom side of the case A, passing through the outer shell, and projecting somewhat above it,

but not reaching to the bottom plate of theI tunnel I5.

Close to each opening of the latter are swung two gates, E and F, which are acted upon bythe current of air passing through the passage B. These are hingedat the upper side of the same, swinging' free at the bottom, butmay be weighted at the top, .so as to balance them, and render them susceptible tothe slightest breath of air.

Stops a a', 85o., are placed upon the sides ot the tunnel, to regulate the play of these doors. It will be seen that/these stops are arranged to give the doors much more swing inside than outward. This is for the purpose of gathering the air and forcing it up through the hole G, while at the same time suicient current is left at the bottom of the tunnel B to carry through the cinders, whether they pass directly through or are deflected by the front door.

In order to provide, however, for the possibility-of any trash getting into the inside case, I place at the` bottom side of the outside shell, at each end, a number of slots, o (l c, &c., which would permit the trash to escape through them.

If it should be desired, wings could be attached on the sides of the openings to the tunnel, on both ends, so as to catch more-air..

By this means, I obtain a .ventilator which supplies a constant stream offresh air, but completely sifts the same of' all foreign matter, which would otherwise in'- trnde itself with the draught.

In very-cold Weather, when a mere suction of air would be sufiicient', I remove the outside stops at each door, so that both doors blow aside, allowing the current of air to pass directly through the tunnel, the front door still, however, deecting the cinders from 1the opening at the top.

In the drawings, at fig. 3, is shown another methodof applying my ventilator. In lthis case, the caseA is attached to the side of the car, the air passing up through the opening G, and through the supply-pipe C, which in this case is on one side, and not at the bottom. Cinders which might accidentally get into the inside shellare allowed to fall out through slots in the lower part of the case at K. This may prove mol'e convenient in adapting my invention to certain classes of cars which are built with-a raised central roof.

Now, having described my invention,

What I claimas new, and desire to secure by Letters Patent, is-

1. A car-ventilator, having the case A, formed with the direct passage B through it, and the double walls, and having the opening G through the top of the passage B, through which air is forced, so as to pass around-through the hollow sides, and through the supply-pipe, the parts being arranged substantially as shown.

2. In combination with the above, the balancedoors E and F, arranged with stops a a, Snc., substantially as herein shown. v

l V ROBERT HITCHCOCK.

-Witnesses EDWARD H. HYDE,

R. F. HYDE., 

